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Business account service · Battery keeps going flat

Repeat Flat Batteries — Blackheath fleet jumpstart & Diagnosis

New battery still going flat in Blackheath? That is a parasitic drain or charging fault, not a bad battery. Drain testing plus fleet jumpstart on-site.

Engineer carrying out battery keeps going flat diagnostics on a vehicle in Blackheath, Sandwell Metropolitan Borough Council area

A healthy vehicle should draw around 20–50 milliamps once everything has gone to sleep. A faulty module, an aftermarket alarm or a stuck relay can pull ten times that, which flattens a good battery in two or three days.

Fleets working out of the B65 area — courier, plumbing, electrical, HVAC, roofing, letting agents — call us daily. We know your vans, we know your yard, we know when your first drop is.

Fleet vans die from parasitic drain more than anything — trackers, dashcams, tail-lifts, refrigeration. We identify the drain, not just recharge the battery.

Who this page is for

Low-mileage drivers whose cars sit for days between short journeys.

Domestically, high-street flats and 1930s semis dominate around here, which shapes how these jobs are accessed and worked.

Usage patterns that flatten good batteries

Cars left standing on high-street flats for a week or more between uses are the other common case in B65.

Locally that means the streets between Blackheath and Rowley Regis, with access via A4123 and A459 and a practical radius reaching Rowley Regis (~1 mi) and Blackheath (~1 mi).

Flat again?

Third battery in two years is a diagnosis problem. We measure the draw and the charging output before anything is replaced. Fleet & Business Jumpstart covers high-street flats and 1930s semis and trade vehicles alike, all from the same van.

Drain faults found nearby

Recent job nearby: a car in Blackheath on its third battery in two years. Drain measured at 480mA, traced to a boot latch microswitch keeping a module awake.
Recent job nearby: a vehicle off A4123 flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.

How a drain is actually traced

  • Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
  • Quiescent draw is measured after the vehicle's modules have gone to sleep, which can take 20–40 minutes — measuring too early gives a false high reading.
  • Vehicle register held on file — one call gives us the reg, spec, battery history and yard location
  • Fleet & Business Jumpstart work here is judged against the vehicle's own specification rather than a generic pass mark.

How the visit runs

  1. 1

    Onboard the fleet

    One call, one fleet list, account live the same day for first callouts.

  2. 2

    How a drain is actually traced

    Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.

  3. 3

    Driver calls in

    Driver quotes the fleet reference; no card payment, no per-job admin.

  4. 4

    Priority dispatch

    Account jobs go ahead of retail callouts, typical arrival 30–45 minutes.

Where we test

As a neighbourhood of Rowley Regis, Blackheath is covered alongside its parent town, so a battery keeps going flat call from any of them routes to the same engineer.

Repeat flat battery questions

Q.How do we open a business account?

One phone call and a fleet list. First job on account can go the same day; formal terms confirmed by email overnight.

Q.Can you supply and fit batteries at trade price?

Yes — Yuasa, Varta, Bosch and Exide at proper trade rates for account customers, fitted on your yard with OBD coding included.

Q.Is a parasitic drain always an electrical fault?

No. Sometimes it is an aftermarket dashcam, tracker or alarm wired to a permanent live. Those are the easy wins and we find them first.

Q.How long does drain testing take?

Allow around an hour. Most of that is waiting for the vehicle's modules to sleep — rushing it produces a meaningless number.

Q.Could short journeys alone be the cause?

Yes, and it is more common than people expect. If that is what the readings show, the fix is a conditioning charge and a change in usage, not another battery.

Q.Do you cover Blackheath and the B65 area for this?

Yes. Blackheath is inside our routine coverage from Oldbury via A4123, roughly 1 miles from Rowley Regis. We cover it alongside Rowley Regis and the surrounding streets.

Why this is safe to book

  • We will not sell a battery to a car whose battery is not the fault.
  • Fixed prices agreed before dispatch — no callout fee just to open the bonnet in B65.

Related pages

The short version

A battery that keeps dying is telling you about the car, not about itself. Measure the sleep draw and the charging voltage in Blackheath and the real fault usually appears within the hour. For fleet jumpstart specifically, that means bulk battery pricing — replacement agm/efb batteries at trade rates, not retail

Stranded with a flat battery?

Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.

Cars & vans 24/7 nationwide Batteries fitted on-site